Since nobody seems to know why these are separate, merge fop into fps.
In case this untested change doesn't work out it should be reverted :)

This fixes the simple case when all pages are to be printed from the
same paper tray. The use of this setting is still confusing when there
is application-set tray for a page (e.g., for a page style in Writer,
through Format->Page), because the change in Preferences is applied (and
will be used for pages without application-set tray), but Preferences
shows the application-set value on second try again...

IOW, it still s---s, but it s---s a bit less .-)

...which has the necessary features to support it.

Change a lot of classes to either contain a protected non-virtual dtor
(which is backwards compatible, so even works for cppumaker-generated
UNO headers) or a public virtual one.

cppuhelper/propertysetmixin.hxx still needs to disable the warning, as
the relevant class has a non-virtual dtor but friends, which would still
cause GCC to warn.

Includes a patch for libcmis, intended to be upstreamed.

No idea whether linking ftransl against static library dtobj is good,
but the other two libraries here link against it already...

We need to do this now because we now store the group field data directly
in the pivot cache, which is shared by all referencing tables.

Also, actions involving modification of the cache is not undoable, and
making it undoable would significantly increase Calc's runtime memory
footprint.  So, no way.

Also, use at(index) when unsure about boundary condition.  That makes
it easier to detect where illegal memory access is being done.

Idea:
- write the layout data to a xml file

still missing:
- xml export part
- some more properties need to be exported
- some more structure information need to be dumped
- find a way to start dumping after importing

Technically these two are both const char[8], so gcc/clang keep
the resulting type the same, but msvc always converts to const char*,
even if the same sizes mean this is not required.